Differential Encoder - Encode binary signal using differential coding

Library

Source Coding

Description

The Differential Encoder block encodes the binary input signal within a channel. The output is the logical difference between the current input element and the previous output element. More specifically, the input and output are related by

d(i₀) = m(i₀) XOR Initial condition parameter value

d(i_k) = d(i_k-1) XOR m(i_k)

where

• m is the input message.

• d is the differentially encoded output.

• i_k is the kth element.

• XOR is the logical exclusive-or operator.

This block accepts a scalar or column vector input signal and treats columns as channels.

Dialog Box

Initial conditions

The logical exclusive-or of this value with the initial input value forms the initial output value.

Supported Data Type

Port	Supported Data Types
In	Double-precision floating point Single-precision floating point Boolean Integer Fixed-point
Out	Double-precision floating point Single-precision floating point Boolean Integer Fixed-Point

References

[1] Couch, Leon W., II, Digital and Analog Communication Systems, Sixth edition, Upper Saddle River, N. J., Prentice Hall, 2001.

Pair Block

Differential Decoder

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